Insulator and core



Jan. 6, 1931. R. MURRAY INSULATOR AND CORE Filed Oct. 20, 1928 TOR arrINVEN V l l Y l I I I l I l l l l I I l l I Y I l Z ni 7 gw J,

Patented Jan. 6 1931 RICHARD MURRAY, NEW YORK, N. Y.

INSULATOR AND CORE Application filed October 20, 1928. Serial No.313,800.

This invention relates to insulators or cores used in the constructionof concrete walls of buildings; and the object of the in vention is toprovide a device of the class specified which is composed of inexpensivematerial and which is of a built up structure in the form of a pluralityof corrugated sheets to give the required strength thereto to maintainthe, body, of concrete in proper positionin the setting of such body inthe formation of walls of any kind or class and in fact in the formationof concrete structures of any description; a further object being toprovide a device of the class described on one side of which is arrangeda sheet of comparatively rigid material preferably having temperatureresisting properties such for example as a sheet of asbestos; a stillfurther object beaoing to provide the other-side face of the devicewitha sheet of material treated to render the same substantially moistureproof; and with these and other objects in view, the invention consistsin a device of the class and for the purpose specified which is simplein construction, efficient in use, and which is constructed ashereinafter described and claimed. I r I The invention is fullydisclosed in the foleo lowing specification of which the accompanyingdrawing forms a part, in which the separate parts of'my improvementaredesignated by suitable reference characters in each of the views, andin which Fig. 1 is a perspective view of a part of a concrete bodyshowing one method of arranging my improved core and insulating devicestherein.

Fig. 2 is a perspective view of a part of one ofthe devices with part ofthe construction broken away; and, Fig. 3 is a perspective view of aconcrete body with one of my improved devices arranged therein andshowing a modified form of device. Y

My improved core forming and insulating device consists in theconstruction shown in Figs; 1 and 2 of the drawing, of a side facingsheet 5 of temperature insulating 5'0 material of a substantially rigidnature and preferably composed of asbestos or an asbestos compound, orother materials having similar properties may be employed. Ar-

ranged on one face of the sheeto is a plu-- rality of corrugated sheets6, 7 and 8. The to sheet 6 rests directly upon the sheet 5 whereas thesheets 6 and 7 are spaced apart by a straight sheet 9, the sheets 7 and8 spaced apart by another straight sheet 10, and arranged on the outerface of the sheet 8 is so another sheet 11, outwardly of which is afacing sheet 12. I

The sheets 6 to 11 inclusive may be com posed of heavy paper, cardboardor any suitable and preferably inexpensive matee5 rial which will be ofsuch texture as to produce the required strength and pressure resistingproperties to suit the particular uses required of the device. Thefacing sheet 12 is preferably composed of a material treated orsaturated to render the same substantially moisture proof such forexample by a treatment of wax, paratlin or similar compounds or treatedwith pitch, tar or the like.

The sheet 12 extends beyond the contour of each of thedevices to formside flap portions 13 and top flap portions 1 1. The flap portions 13are wrapped around the sides of each device whereas the flap 1 1normally rests upon the top of each device in the operation of pouringthe concrete and may be torn off in whole or in part when the concretehas become set and in the operation of placing one device upon the otherin forming a continu ous chamber or core through the concrete body.

While my invention has many uses, its primary use is in the constructionof concrete walls of buildings, and in this use, the devices may beplaced directly one upon the other and spaced laterally in the wall toform continuous chambers or cores extending vertically through the wallstructure.

In Fig. 1 of the drawing, 1 have shown at 15 a part of a concrete wallwith two of my improved devices arranged therein to form two separatechambers or cores 16 and 17 extending vertically through the wall andspaced apart by columns of concrete designated at 18 which join theinner face portion 15a with 7 in forming the concrete wall structure.However, it Wlll be understood that two or more or these devices may beplaced-one upon the the outer face portion 15b thereof. These columnswill be arranged between the spaced devices employed in the completewall struc-' 'ture.

In the construction shown, my improved core forming and insulatingdevices are made rectangular in form and preferably of a height equal tothe height of a cast to be made other in forming one cast or mold of thewall structure, and furthermore it will be'apparent that my invention isnot necessarily limited to any partlcular contour of the separatedevices employednor to any particular arrangement 7 thereof in the wallstructure. 1 This phase of my invention is more specifically covered inacompanionapplication filed by me of equal dateherewith.

In. 3 of the drawing, I have shown a slight modification in the form ofthe devices employed, and in this construction 56; repreisents theasbestos sheet similar to the sheet 5; 6a, 7a, 8a, 9a, 10a and 11arepresent sheets similar to the sheets 6 to 11 inclusive, and insteadofemploying the sheet 12 as, shown in Fig. 2 of thedrawing, I employanotherrectangularsheet 19- With this construction in molding theconcrete of a wall 20-around thedevices, the body of concrete willextend into 1 the recesses 19a of the sheet 19 to form a multiplicity ofvertical concrete ribs which will 7' be of the cross section of therecesses 19a,

and in like manner, the projecting portions 1960f the sheet 19 will formcorresponding recesses intermediate said ribs. 7 p

At thistime, it will be understood that my invention is notnecessarilylimited to any particular number of the corrugated or other sheetsemployed in the separate devices nor to any particular curvature orcross sectional form of the corrugated 'sheets'as this will largelydepend upon the size of the core required and the size of the wallstructure to be formed and the amount of pressure which must be resistedby said devices. -While I have shown certain details of construction forcarrying my invention into'effect and have referred to a specific use ofthe invention, it: 7 will be understood that I am not necessarilylimited in these respects and various changes in and modifications ofthe construction herein shownand described may bemade within the scopeof the appendedclaims without departing from the spirit of my inventionor sacrificing its advantages. Having fully described my invention, whatI claim as new and desire to secure by Letters Patent,- is

1. A device for forming cores or chambers in concrete bodies consistingof a plurality 1 of sheets having irregular cross sectional contourarranged side by side, straight sheets in-' terposed between said firstnamed sheets, all

of said sheets being composed of fibrous material, and a facing sheet atone side of the device involving a compound having heat resistingproperties. p

2. A device for forming cores or chambers in concrete bodies consistingof a plurality of sheets having irregularcross sectional contourarranged side by side, straight sheets interposed between said firstnamed sheets, all

of said sheets being composed of fibrous material, a facing sheet at;one sideof thedevice involving a compound having heat resistingproperties, and a facing sheet on the other side of the device includingmoisture proof material. U

3. A device for forming cores or chambers in concrete bodies consistingof a plurality of sheets having irregular cross sectional contourarranged side by side, straight sheet-s interposed between saidfirstjnamed sheets, all

of said sheets being composed of fibrous ma terial, a facing sheet atone side of the device involving a compound, having heat resistingproperties, a facing sheeton the other side of the device includingmoisture proof material, andsaid last named sheet having fiaps adaptedto lie over predetermined edge portionssof said device. Y T

v L- A core forming device for concrete structures comprising a memberadapted'to be ar ranged and imbedded in a body of concrete to v form achamber or'core therein, said member consisting of a plurality ofcorrugated sheets arranged sideb'y side withfiat spacing sheets arrangedtherebetween to form a unit structure, and 'said' member including afacing.

vsheet having waterproof characteristics arranged upon one sideface ofsaid member.

5. A core forming device for concrete structures comprising a memberadapted to be arranged and imbeddedin abody of concrete to form achamber or core therein, saidmember consisting of a plurality ofcorrugatedsheets arranged side by side with fiat spacingsheets arrangedtherebetween. to form .a unit structure, said member including a facingsheet having waterproof characteristics arranged upon one side face ofsaid member, and another comparatively thick facing sheet of fireproofmaterial arranged on the other face of said member. I v

6. A core forming device for concrete struc-. tures comprising a memberadapted to be ar ranged and imbedded in a body of concrete to form achamber or core therein, said member consisting of a plurality ofcorrugated sheets cover predetermined side edges of said member.

7 In concrete structures of the class described, a core forming deviceadapted to be imbedded in the concrete structure in forming the same,said member comprising outer facing sheets of moistureproof materialpreventing the passage of concrete into said member, and the centralbody portion of said member being formed from a plurality of sheetsplaced side by side, alternate sheets being of corrugated crosssectional form and the intermediate sheets being fiat.

8. In concrete structures of the class described, a core forming deviceadapted to be imbedded in the concrete structure in forming the same,said member comprising outer facing sheets of moisture-proof materialpreventing'the passage of concrete into said memher, the central bodyportion of said member being formed fromsa plurality of sheets placedside by side, alternate sheets being of corrugated cross sectional formand the intermediate sheets being flat, and one facing sheet of saidmember being comparatively thick and composed of fireproof material.

In testimonythat I claim the foregoing as my invention I have signed myname this 11th day of October, 1928.

RICHARD MURRAY.

